return 与 finally 的执行顺序对返回值的影响

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return 与 finally 的执行顺序对返回值的影响

对于try和finally至少一个语句块包含return语句的情况：
finally语句块会执行
finally没有return，finally对return值的修改无效
try和finally都包含return，return值会以finally语句块return值为准

代码

public static void main(String[] args) {
		System.out.println(getString());
	}
	
	public static String getString() {
		String str = "A";
		try {
			str = "B";
			return str;
		} finally {
			System.out.println("finally change return string to C");
			str = "C";
//			return str;
		}
	}

输出

finally change return string to C
B
 

public static void main(String[] args) {
		System.out.println(getString());
	}
	
	public static String getString() {
		String str = "A";
		try {
			str = "B";
			return str;
		} finally {
			System.out.println("finally change return string to C");
			str = "C";
			return str;
		}
	}

输出

finally change return string to C
C
 

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